native sulfur

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Noun1.native sulfur - an old name for sulfur
atomic number 16, sulfur, sulphur, S - an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)
References in periodicals archive ?
Most curiously, pale yellow native sulfur forms spherical, woolly shapes, like ranks of cumulus clouds in a faintly blue sky, just under the surfaces of the celestine crystals.
Rock Currier, who wanted a sea container (8 tons) of crystallized native sulfur for his wholesale mineral business in California, I set off for the remote El Desierto sulfur mine in Bolivia to check on the progress of our specimen-mining project.
Gold values from surface samples in the western zone were low, however, in view of the intense silicification, porous nature of the rock, evidence of leached sulfide minerals and grains of native sulfur, a test pit sampling program has been commenced and drill locations are being selected.